21425041334 has 8 divisors (see below), whose sum is σ = 32279137848. Its totient is φ = 10665328720.

The previous prime is 21425041291. The next prime is 21425041369. The reversal of 21425041334 is 43314052412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 21425041297 and 21425041306.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23595407 + ... + 23596314.

It is an arithmetic number, because the mean of its divisors is an integer number (4034892231).

Almost surely, 2^21425041334 is an apocalyptic number.

21425041334 is a deficient number, since it is larger than the sum of its proper divisors (10854096514).

21425041334 is a wasteful number, since it uses less digits than its factorization.

21425041334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47191950.

The product of its (nonzero) digits is 11520, while the sum is 29.

Adding to 21425041334 its reverse (43314052412), we get a palindrome (64739093746).

The spelling of 21425041334 in words is "twenty-one billion, four hundred twenty-five million, forty-one thousand, three hundred thirty-four".